Socket/Protocols/INet/INetAddressing.cc

   1 // $Id$
   2 //
   3 // Copyright (C) 2006
   4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
   5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
   6 //     Stefan Bund <g0dil@berlios.de>
   7 //
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 2 of the License, or
  11 // (at your option) any later version.
  12 //
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the
  20 // Free Software Foundation, Inc.,
  21 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22
  23 /** \file
  24     \brief INet[46]Address and INet[46]AddressingPolicy non-inline non-template implementation
  25  */
  26
  27 #include "INetAddressing.hh"
  28 //#include "INetAddressing.ih"
  29
  30 // Custom includes
  31 #include <sstream>
  32 #include <string.h>
  33 #include <sys/socket.h>
  34 #include <net/if.h>
  35 #include <boost/lexical_cast.hpp>
  36 #include <boost/regex.hpp>
  37 #include "../../../Utils/senfassert.hh"
  38
  39 //#include "INetAddressing.mpp"
  40 #define prefix_
  41 ///////////////////////////////cc.p////////////////////////////////////////
  42
  43 ///////////////////////////////////////////////////////////////////////////
  44 // senf::INet4SocketAddress
  45
  46 prefix_ senf::INet4SocketAddress::INet4SocketAddress(std::string const & addr)
  47 {
  48     clear();
  49     unsigned portIx = addr.find(':');
  50     try {
  51         port( boost::lexical_cast< ::u_int16_t >(portIx == std::string::npos
  52                                                  ? addr : std::string(addr,portIx+1)) );
  53     }
  54     catch (boost::bad_lexical_cast const &) {
  55         throw AddressSyntaxException() << "invalid port number";
  56     }
  57     if (portIx != std::string::npos)
  58         address( INet4Address::from_string(std::string(addr,0,portIx)) );
  59 }
  60
  61 prefix_ senf::INet4SocketAddress::INet4SocketAddress(INet4Address const & addr, unsigned p)
  62 {
  63     clear();
  64     address(addr);
  65     port(p);
  66 }
  67
  68 prefix_ senf::INet4SocketAddress::INet4SocketAddress(unsigned p)
  69 {
  70     clear();
  71     port(p);
  72 }
  73
  74 prefix_ void senf::INet4SocketAddress::clear()
  75 {
  76     ::memset(&addr_,0,sizeof(addr_));
  77     addr_.sin_family = AF_INET;
  78 }
  79
  80 ///////////////////////////////////////////////////////////////////////////
  81 // senf::INet6SocketAddress
  82
  83 prefix_ senf::INet6SocketAddress::INet6SocketAddress(std::string const & addr,
  84                                                      INet6Address::Resolve_t resolve)
  85 {
  86     clear();
  87
  88     // Format of addr: "[" address [ "%" interface ] "]" ":" port
  89     //             or: host ":" port
  90     //             or: port
  91
  92     static boost::regex const addressRx ("(?:(?:\\[([a-f0-9A-F:]+)(?:%(.+))?\\]|(.+)):)?([0-9]+)");
  93     // Subexpression numbers:
  94     enum { NumericAddr = 1,
  95            ZoneId      = 2,
  96            Hostname    = 3,
  97            Port        = 4 };
  98
  99     boost::smatch match;
 100     if (! regex_match(addr, match, addressRx))
 101         throw AddressSyntaxException();
 102
 103     if (match[ZoneId].matched)
 104         assignIface(match[ZoneId]);
 105
 106     sockaddr_.sin6_port = htons(boost::lexical_cast<boost::uint16_t>(match[Port]));
 107
 108     if (match[NumericAddr].matched || match[Hostname].matched) {
 109         INet6Address a (INet6Address::from_string(
 110                             match[NumericAddr].matched ? match[NumericAddr] : match[Hostname],
 111                             resolve));
 112         std::copy(a.begin(), a.end(), &sockaddr_.sin6_addr.s6_addr[0]);
 113     }
 114 }
 115
 116 prefix_ bool senf::INet6SocketAddress::operator==(INet6SocketAddress const & other)
 117     const
 118 {
 119     return ::memcmp(&sockaddr_.sin6_addr, &other.sockaddr_.sin6_addr, sizeof(sockaddr_.sin6_addr))==0 &&
 120         sockaddr_.sin6_port == other.sockaddr_.sin6_port &&
 121         sockaddr_.sin6_scope_id == other.sockaddr_.sin6_scope_id;
 122 }
 123
 124 prefix_ void senf::INet6SocketAddress::clear()
 125 {
 126     ::memset(&sockaddr_,0,sizeof(sockaddr_));
 127     sockaddr_.sin6_family = AF_INET6;
 128 }
 129
 130 prefix_ std::string senf::INet6SocketAddress::iface()
 131     const
 132 {
 133     if (sockaddr_.sin6_scope_id == 0)
 134         return "";
 135     char buffer[IFNAMSIZ];
 136 #ifdef SENF_DEBUG
 137     SENF_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
 138 #else
 139     if_indextoname(sockaddr_.sin6_scope_id,buffer);
 140 #endif
 141     return std::string(buffer);
 142 }
 143
 144 prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
 145 {
 146     if (iface.empty())
 147         sockaddr_.sin6_scope_id = 0;
 148     else {
 149         sockaddr_.sin6_scope_id = if_nametoindex(iface.c_str());
 150         if (sockaddr_.sin6_scope_id == 0)
 151             throw AddressSyntaxException();
 152     }
 153 }
 154
 155 ///////////////////////////////cc.e////////////////////////////////////////
 156 #undef prefix_
 157 //#include "INetAddressing.mpp"
 158
 159 \f
 160 // Local Variables:
 161 // mode: c++
 162 // fill-column: 100
 163 // c-file-style: "senf"
 164 // indent-tabs-mode: nil
 165 // ispell-local-dictionary: "american"
 166 // compile-command: "scons -u test"
 167 // comment-column: 40
 168 // End: